From my understanding, "doing any work or changes to the motor or vehicle".

I've heard of some people putting CAIs on and still having their warranty though. Think it depends on who you got it from(the car).

Anything we've had personally and put an intake or such on, deff voided our warrantys.


edit: ^^^ yeah nismo stuff would make sense, just check into it, I'm used to fords and such.